>
Constitutional Sheriffs Event Offers Solutions, Fake Media Loses It
JUST IN: Lawless Arizona Governor Katie Hobbs Vetoes Bipartisan Bill to Combat Squatting in Arizona
The Summit of the Future and the Pact for the Future Will Rapidly Expand the Technocratic Takeover
From Bird Flu to Climate Snakes
Blazing bits transmitted 4.5 million times faster than broadband
Scientists Close To Controlling All Genetic Material On Earth
Doodle to reality: World's 1st nuclear fusion-powered electric propulsion drive
Phase-change concrete melts snow and ice without salt or shovels
You Won't Want To Miss THIS During The Total Solar Eclipse (3D Eclipse Timeline And Viewing Tips
China Room Temperature Superconductor Researcher Had Experiments to Refute Critics
5 video games we wanna smell, now that it's kinda possible with GameScent
Unpowered cargo gliders on tow ropes promise 65% cheaper air freight
Wyoming A Finalist For Factory To Build Portable Micro-Nuclear Plants
Smart speakers and other microphone-equipped devices aren't supposed to listen all the time, but there might be a solution if you aren't willing to take any chances. University of Chicago researchers have built an experimental bracelet that uses ultrasonic broadcasts from 24 speakers to jam most microphones, no matter what direction they're in. The gadget takes advantage of non-linearities in its built-in amplifier to 'leak' ultrasonic noise into the audible range and render recordings useless.
The bracelet design isn't for the sake of fashion. It not only ensures omnidirectional jamming, it eliminates blind spots (where transducers cancel each other out) through your wrist movement. As a result, it's more effective than dedicated stationary jammers and can even scramble hidden mics.
You're not about to use the prototype bracelet. It's more than a little clunky, and the internals amount to a handful of boards and a battery. The scientists told the New York Times that investors have asked about commercializing the technology, though, and it's estimated that you could build this anti-mic bracelet for roughly $20.